Himezaki Orie is a prefect A student in the school.
Inherited academic ability from her politician father, and amazing good looks from mother, one of successful actresses in the history. Her life had been fulfilled by the advantage of parental influence and connections. It was probably one of the reasons why she couldn't build a deep relationships with teachers and students, feeling uncomfortable with her.
She had everything, but lacked something important....
One day, she found the "secret" of the new female teacher Fujimoto Haruna....
The secret was so exciting. She became obsessed with ecstasy in sexual lessons little by little...... Her sexual desire only grew stronger, sullying the purity of herself..... In the empty classroom after school.....the secret continued....